Effect of transition metals on oxygen delignification and peroxide bleaching

Paperi ja Puu/Paper and Timber

Volumn 80, Issue 2, 1998, Pages 116-121

  Soini, Petteri ^a,b   Jäkärä, Jukka ^c   Koljonen, Jorma ^c   Gullichsen, Johan ^c  

^a KEMIRA OYJ   (Finland)

^b AALTO UNIVERSITY   (Finland)

^c NONE

Author keywords

Chelation; Kraft pulp; Oxygen delignification; Pulp properties; Transition metal

Indexed keywords

BLEACHING; CHELATION; OXYGEN; PEROXIDES; STRENGTH OF MATERIALS; TRANSITION METALS;

OXYGEN DELIGNIFICATION; TEAR STRENGTH;

KRAFT PULP;

EID: 0031655064     PISSN: 00311243     EISSN: None     Source Type: Trade Journal    
DOI: None     Document Type: Article

References (14)

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2. McDonough, T.J.: Oxygen delignification. Bleach plant operations seminar. Charleston, SC, March 5-10, 1989. Atlanta 1989. Tappi Press. Pp. 61-69.
3. Bryant, P.S., Edwards, L L., Robarge, K : Transition metal profile monitoring and control in closed kraft mill fiberlines. Tappi J. 76(1993):10, 148-159.
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8. Colodette, J.L., Campos, A.S., Gomide, J.L., Attempts to use white liquor as the source of alkali in the oxygen delignification of eucalypt kraft pulp. 1990 Oxygen delignification symposium. Toronto, Ontario, October 17-19, 1990. Atlanta 1990. TAPPI Press. Pp. 145-151.
9. Lima, M.M de, Manfredi, V., Claudio-da-Silva, E. Jr.: Total chlorine-free bleaching of eucalypt kraft pulp. Pulping Conference. Toronto, Ontario, October 14-17, 1990. Atlanta 1990. Tappi Press. Pp. 799-807.
10. Throughton, N., Sarot, P.: The efficient use of hydrogen peroxide as a chemical pulp delignification agent: The Macrox(Service mark sign) process. Pulping Conference. Boston, MA, November 1-5, 1992. Tappi Press, Atlanta 1992. Pp 519-535.
11. Graeffe, G : Chemical alternatives to oxygen bleaching. INSKO, publication 160-89. Sulfaattisellun keitto ja happivalkaisu. Pp. XIV, 1-9. In Swedish.
12. Basta, J , Holtinger, L., Hook, J.: Controlling the profile of metals in the pulp before hydrogen peroxide treatment. 6th International Symposium on Wood and Pulping Chemistry. Melbourne, April 30-May 4, 1991. Appita. Pp. 237-244.
13. Soini, P , Jäkärä, J., Koljonen, J Gullichsen, J : Ozone and peroxide bleaching of two-stage oxygen-delignified MCC. Unpublished article.
14. Soini, P.: Optimization of a two-stage oxygen delignification process and the bleachability of pulps with new bleaching methods. Thesis. The Helsinki University of Technology, department of forest product technology, 1996. 102 pages. In Finnish.